Toilet flush size selection unit



FIG. 1 is a perspective view of a tiolet flush size selection unit showing our new design;

FIG. 2 is a front elevational view thereof, the rear being a mirror image of the front;

FIG. 3 is a side elevational view thereof, the side opposite being a mirror image of the side shown;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom view thereof.

The fragmentary broken line representation of a water supply tube in FIGS. 1 through 5 is for purposes of illustration only and forms no part of the claimed design. 

The ornamental design for a toilet flush size selection unit, as shown and described. 